So I have a king male and was wondering about adding a "friend" to his tank. He was living with 2 baby cray fish but they started to get to big to live in the 10gl with him I felt like they were cramped. Since I removed them he seems kind of bored I guess... I added some ghost shrimp but he doesn't seem to even notice them. Tried some mystery snails... Again nothing. So wondering if anyone has any ideas? He used to "hunt" the crays but never tried to bite them or even flare at them and if they lunged at him with their claws up he would back away.